CN204871055U - Two -way couple formula braking car - Google Patents
Two -way couple formula braking car Download PDFInfo
- Publication number
- CN204871055U CN204871055U CN201520647794.0U CN201520647794U CN204871055U CN 204871055 U CN204871055 U CN 204871055U CN 201520647794 U CN201520647794 U CN 201520647794U CN 204871055 U CN204871055 U CN 204871055U
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- brake
- braking
- car
- frame
- pull bar
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Abstract
The utility model discloses a two -way couple formula braking car, including two sets of couple formula arresting gear and braking orbit, couple formula arresting gear includes and saves the pull rod that the mine car links to each other around with, and the other end of pull rod passes the uide bushing, and the uide bushing is inboard connects a pressure spring I, and even on the pull rod, the pull rod tip passes through the nut and connects the deflector pressure spring I cover, and pressure spring I's the other end contacts and drives the deflector with the deflector and slides in the uide bushing, the couple formula arresting gear of every group still includes a connecting rod and a brake lever, and the pull rod is articulated through round pin axle I with the connecting rod, and the connecting rod is articulated through round pin axle II with the brake lever, tooth's socket intermeshing on braking sleeve on the brake lever and the braking orbit, the brake lever articulates with the axletree mutually. The switching -over braking can be realized to the switching -over device in the braking car, and the pressure spring can be with brake force cushioning effect to braking car on the brake lever. Arresting gear in this braking car can brake rapidly, need not to establish in addition power, low in manufacturing cost, and easily installation is convenient for maintain.
Description
Technical field
The utility model relates to a kind of brake type mine car, is specifically related to a kind of bidirectional hook formula braking car.
Background technology
Slope vehicle rail transport is a kind of transportation mode that the mines such as colliery extensively adopt, its types of transportation is transported by the winch traction mine car group be arranged on above inclined shaft, often there is the phenomenons such as disconnected rope, chain rupture or disconnected pin and cause the problem of mine car or mine car group row sport car in mine car, causes safety in production casualty accident often to occur when running.
Catcher conventional at present has following several form, and a kind of is the running velocity being detected mine car in mine by sensor, once the utilization of discovery stall condition is kept off a car, net or arrester stop mine car.This mode weak point is: blocking apparatus weight is comparatively large, and in-site installation carrying and inconvenient maintenance are difficult to universal use; Blocking apparatus can only single use, and both wasted material, and destroyed again the continuity of shaft production, accident settlement is time-consuming requires great effort again
Another kind installs electron detection device on mine car, adopts retaining pawl or embrace rail mechanism to brake mine car.The defect of this mode is: equipment debugging, maintenance program complexity etc. are numerous and diverse, the electronic product antidusting used in equipment, corrosion resistance are poor, after long-time use, electronic product performance is unstable, sometimes also can malfunctioning at crucial moment, lost efficacy or misoperation; What is more, and an inclined shaft wants multistage to tackle just can reach comparatively ideal effect, and this not only increases mine cost, but also the interception result of out of reach 100%.
Summary of the invention
For solving the problem, the utility model provides a kind of bidirectional hook formula to brake car, be arranged in the middle of mine car group front end or mine car group, the downward any point of this braking car grade change point in inclined gallery is initiatively braked because disconnected rope, unhook etc. cause during derailing accident, structure is simple simultaneously, cost is low, and installation and maintenance are extremely convenient.
To achieve these goals, a kind of bidirectional hook formula braking of the utility model car, comprise two groups of coupling type brake equipments and braking orbit, described coupling type brake equipment is arranged on rear and front end on braking vehicle carriage respectively symmetrically, and described braking orbit is be laid on the rack-and-pinion braking orbit in the middle of slope track; Coupling type brake equipment comprises the pull bar be connected with prosthomere mine car or deutomerite mine car, pull bar also can slide through the mounting hole in frame in frame, the other end of pull bar is through the orienting sleeve be fixed in frame, a stage clip I is connected inside orienting sleeve, stage clip I cover is connected on pull bar, tie rod end connects a guide plate by nut, and the other end of stage clip I contacts with guide plate and drives guide plate to slide in orienting sleeve;
Often organize coupling type brake equipment and also comprise a connecting rod and a brake rod, one end of pull bar and connecting rod is hinged by bearing pin I, and it is hinged that the other end of connecting rod and the medium position of brake rod pass through bearing pin II;
Brake rod comprises two symmetrical slippers, one end of two slippers is linked together by brake axle, on brake axle, cover has the brake sleeve that can rotate around it, teeth groove on brake sleeve and braking orbit engages each other, the other end of brake rod has rectangle adapter sleeve, rectangle adapter sleeve has slotted hole, and axletree is hinged with it through the slotted hole on rectangle adapter sleeve.
The situation of rope or unhook once generation winch haulage cable breaks, connecting bridge before or after braking car just loses tractive force, under the elastic restoring force effect of stage clip I, guide plate drives pull bar to slide in the mounting hole of frame, pull bar drivening rod rotates around hinge-point, and connecting rod pulls brake rod to rotate around axletree, and the brake axle of brake rod one end is brought in the teeth groove of braking orbit together with brake sleeve, thus stop the descending sport car of mine car, reach the object of braking rapidly; When mine car recovers traction, the elastic force that pull bar overcomes stage clip I moves forward at the mounting hole of frame, pull bar drivening rod rotates backward around hinge-point simultaneously, connecting rod pulls brake rod to rotate backward around axletree, the brake axle of brake rod one end departs from braking orbit together with brake sleeve, arresting between end bearing pin and sleeve due to brake rod is friction of rolling, so brake rod hinders moment little, so brake rod easily can produce from tooth-like track in the formula that produces from tooth-like track.What the brake equipment in this mine car adopted is simple mechanical drive, and without the need to separately establishing power, volume is little, low cost of manufacture, is easy to install, and is convenient to safeguard; Owing to being immediately arrest completely, arrest rear to mine car, track inclined shaft two side apparatus and personnel without any damage.
Further, the blind hole in rectangle adapter sleeve is circular, and stage clip II is fixed in rectangle adapter sleeve by plug screw and back-up ring by one end of blind hole, and the other end of stage clip II connects a slide plate, and described slide plate contacts with axletree all the time.
During braking, brake rod rotates at the hinge-point place with axletree, axletree relative sliding in the slotted hole of rectangle adapter sleeve, promote slide plate compression press spring II simultaneously, by braking force buffer action on axletree, thus the mild braking of realization braking car is on the tooth-like track in centre, is connected in braking car mine car group below and also brakes in orbit.
Further, the both sides of axletree fixing back-up ring and detachable back-up ring restriction rectangle adapter sleeve move owing to axletree being fixed the spacing of back-up ring and removable back-up ring, all the time do not de-orbit when brake rod moves in elongated hole line of centers, and detachable back-up ring facilitates brake rod dismounting and change simultaneously.
Further, the frame of mine car is also provided with direction reverser, described direction reverser comprises eccentric wheel, eccentric shaft and driving lever, eccentric shaft is connected by key through the Kong Bingyu eccentric wheel in frame, eccentric shaft is connected by key with driving lever, and driving lever band movable eccentric wheel and eccentric shaft rotate around hole on vehicle frame and contact with the tie rod end of both sides.
In order to make mine car go for any direction on go down the hill transport, this direction reverser can by the rotation of control eccentric make left side or right side brake equipment open or close; When transporting to the right, the brake equipment in the working direction of right side need be opened, left hand brake device is closed simultaneously; When transporting to the left, need the brake equipment in the working direction of left side to open, right side brake equipment is closed simultaneously; When for example opening right side brake equipment, driving lever is rotated by eccentric shaft band movable eccentric wheel, eccentric wheel is moved to the left by pushing drawing rod, pull bar drivening rod rotates, connecting rod drives brake rod to rotate and brake axle and brake sleeve is pulled out from the teeth groove of braking orbit, thus close left hand brake device and open right side brake equipment, make mine car can forwards transportation smoothly.
Further, one end of driving lever has fixed orifice, frame has two symmetrical knock holees, and locating dowel pin is fixed on the knock hole of frame through the fixed orifice on driving lever; Locating dowel pin connects with driving lever is dynamic, and the bearing pin of locating dowel pin has two circular grooves, the side of driving lever has tapped bore, and one end of screw connects a steel ball by spring, and screw is arranged in tapped bore, and steel ball and one of them circular groove engage each other; Driving lever is with when wherein side knock hole is connected, and eccentric wheel extrudes the pull bar of opposite side and opens this side brake equipment.
Pulled out outside knock hole frame by locating dowel pin, due to the elastic force of spring, steel ball and another on locating dowel pin enclose annular opening and engage and fixed by locating dowel pin, and now driving lever is unfettered; Then rotating lever 180 °, and being inserted by locating dowel pin on another knock hole, steel ball and another on locating dowel pin enclose annular opening and engage and can prevent locating dowel pin from losing.
Further, uniform some annular knurls on the outer circumference surface of brake sleeve.The friction force between brake drum and braking rack guide rail can be improved, make deceleration and stopping performance more reliable.
Further, the below of frame, the top of brake rod has the limiting stopper of restriction brake rod position.Limiting stopper is for limiting the end position of lever connection.
Further, the pull bar inside frame is fixed with block.Tractive force, for limiting the end position of pull bar in car haul process, is applied directly in frame by pull bar by block, and all the other rod members do not stress.
The utility model low cost of manufacture, is easy to install, and is convenient to safeguard; Rapidly, braking steadily, can repeatedly use in braking; Mine car can be made to meet without the need to dismounting up or descending.
Accompanying drawing explanation
Fig. 1 is the utility model schematic diagram;
Fig. 2 is the cutaway view of A-A in Fig. 1;
Fig. 3 be in Fig. 1 B to partial view;
Fig. 4 is the cutaway view of C-C in Fig. 1;
Fig. 5 is the section enlarged diagram of D-D in Fig. 3.
In figure: 1, pull bar; 2, frame; 3, block; 4, bearing pin I; 5, connecting rod; 6, stage clip I; 7, orienting sleeve; 8, guide plate; 9, locating dowel pin; 10, driving lever; 11, eccentric shaft; 12, eccentric wheel; 13, bearing pin II; 14, brake rod; 14-1, rectangle adapter sleeve; 15, axletree; 16, slide plate; 17, stage clip II; 18, back-up ring; 19, plug screw; 20, brake axle; 21, brake sleeve; 22, limiting stopper; 23, steel ball; 24, spring; 25, screw; 26, knock hole; 27, braking orbit; 28, fixing back-up ring; 29, detachable back-up ring.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, a kind of bidirectional hook formula braking car, comprise two groups of coupling type brake equipments and braking orbit 27, described coupling type brake equipment is arranged on rear and front end in braking car frame 2 respectively symmetrically, described braking orbit 27 is for being laid on the rack-and-pinion braking orbit in the middle of slope track, and the direction of arrow is mine car working direction;
Coupling type brake equipment comprises the pull bar 1 be connected with prosthomere mine car or deutomerite mine car, pull bar 1 also can slide through the mounting hole in frame 2 in frame 2, the other end of pull bar 1 is through the orienting sleeve 7 be fixed in frame, a stage clip I6 is connected inside orienting sleeve 7, stage clip I6 cover is connected on pull bar 1, pull bar 1 end connects a guide plate 8 by nut, and the other end of stage clip I6 contacts with guide plate 8 and drives guide plate 8 to slide in orienting sleeve 7;
Often organize coupling type brake equipment and also comprise a connecting rod 5 and a brake rod 14, pull bar 1 is hinged by bearing pin I4 with one end of connecting rod 5, and it is hinged that the other end of connecting rod 5 and the medium position of brake rod 14 pass through bearing pin II13;
Brake rod 14 comprises two symmetrical slippers, one end of two slippers is linked together by brake axle 20, on brake axle 20, cover has the brake sleeve 21 that can rotate around it, brake sleeve 21 engages each other with the teeth groove on braking orbit 27, the other end of brake rod 14 has rectangle adapter sleeve 14-1, rectangle adapter sleeve has slotted hole, and axletree 15 is hinged with it through the slotted hole on rectangle adapter sleeve 14-1.
The connection diagram of pull bar 1 and connecting rod 5 as shown in Figure 4.
The situation of rope or unhook once generation winch haulage cable breaks, connecting bridge before or after braking car just loses tractive force, under the elastic restoring force effect of stage clip I6, guide plate 8 drives pull bar 1 to slide in the mounting hole of frame 2, pull bar 1 drivening rod 5 rotates around hinge-point, connecting rod 5 pulls brake rod 14 to rotate around axletree 15, the brake axle 20 of brake rod one end is brought into together with brake sleeve 21 in the teeth groove of braking orbit 27, thus stop the descending sport car of mine car, reach the object of braking rapidly; When mine car recovers traction, the elastic force that pull bar 1 overcomes stage clip I6 moves forward at the mounting hole of frame 2, pull bar 1 drivening rod 5 rotates backward around hinge-point simultaneously, connecting rod 5 pulls brake rod 14 to rotate backward around axletree 15, the brake axle 20 of brake rod one end departs from braking orbit 27 together with brake sleeve 21, arresting between end bearing pin 20 and sleeve 21 due to brake rod is friction of rolling, so brake rod hinders moment little, so brake rod easily can produce from tooth-like track in the formula that produces from tooth-like track.What the brake equipment in this mine car adopted is simple mechanical drive, and without the need to separately establishing power, volume is little, low cost of manufacture, is easy to install, and is convenient to safeguard; Owing to being immediately arrest completely, arrest rear to mine car, track inclined shaft two side apparatus and personnel without any damage.
As shown in Figure 1 and Figure 2, blind hole in rectangle adapter sleeve 14-1 is circular, stage clip II17 is fixed in rectangle adapter sleeve 14-1 by plug screw 19 and back-up ring 18 by one end of blind hole, and the other end of stage clip II17 connects a slide plate 16, and described slide plate 16 contacts with axletree 15 all the time.
During braking, brake rod 14 rotates at the hinge-point place with axletree 15, axletree 15 relative sliding in the slotted hole of rectangle adapter sleeve 14-1, promote slide plate compression press spring II simultaneously, by braking force buffer action on axletree 15, thus the mild braking of realization braking car is on the tooth-like track in centre, is connected in braking car mine car group below and also brakes in orbit.
Further, the both sides of axletree 15 limit rectangle adapter sleeve 14-1 with fixing back-up ring 28 and detachable back-up ring 29 and move.
Owing to axletree being fixed the spacing of back-up ring and removable back-up ring, do not de-orbit when brake rod 14 moves in elongated hole line of centers all the time, and detachable back-up ring facilitates brake rod dismounting and change simultaneously.
As shown in Figure 1, Figure 3, the frame 2 of mine car is also provided with direction reverser, described direction reverser comprises eccentric wheel 12, eccentric shaft 11 and driving lever 10, eccentric shaft 11 is connected by key through the Kong Bingyu eccentric wheel 12 in frame 2, eccentric shaft 11 is connected by key with driving lever 10, and driving lever 10 to rotate around hole on vehicle frame 2 with movable eccentric wheel 12 and eccentric shaft 11 and contacts with pull bar 1 end of both sides.
In order to make mine car go for any direction on go down the hill transport, this direction reverser can by the rotation of control eccentric 12 make left side or right side brake equipment open or close; When transporting to the right, the brake equipment in the working direction of right side need be opened, left hand brake device is closed simultaneously; When transporting to the left, need the brake equipment in the working direction of left side to open, right side brake equipment is closed simultaneously; When for example opening right side brake equipment, driving lever 10 is with movable eccentric wheel 12 to rotate by eccentric shaft 11, eccentric wheel 12 is moved to the left by pushing drawing rod 1, pull bar 1 drivening rod 5 rotates, connecting rod 5 drives brake rod 14 to rotate and brake axle 20 and brake sleeve 21 is pulled out from the teeth groove of braking orbit 27, thus close left hand brake device and open right side brake equipment, make mine car can forwards transportation smoothly.
As shown in Figure 3 and Figure 5, one end of driving lever 10 has fixed orifice, frame 2 has two symmetrical knock holees 26, and locating dowel pin 9 is fixed on the knock hole 26 of frame 2 through the fixed orifice on driving lever 10; Locating dowel pin 9 connects with driving lever 10 is dynamic, the bearing pin of locating dowel pin 10 has two circular grooves, the side of driving lever 10 has tapped bore, and one end of screw 25 connects a steel ball 23 by spring 24, screw 25 is arranged in tapped bore, and steel ball 23 and one of them circular groove engage each other; Driving lever 10 is with when wherein side knock hole is connected, and eccentric wheel 12 extrudes the pull bar 1 of opposite side and opens this side brake equipment.
Pulled out outside knock hole 26 frame 2 by locating dowel pin 9, due to the elastic force of spring, steel ball 23 and another on locating dowel pin 9 enclose annular opening and engage and fixed by locating dowel pin, and now driving lever 10 is unfettered; Then rotating lever 180 °, and being inserted by locating dowel pin 9 on another knock hole 26, steel ball and another on locating dowel pin enclose annular opening and engage and can prevent locating dowel pin from losing.
Further, uniform some annular knurls on the outer circumference surface of brake sleeve 21.The friction force between brake drum and braking rack guide rail can be improved, make deceleration and stopping performance more reliable.
As shown in Figure 1, the below of frame 2, the top of brake rod 14 has the limiting stopper 22 of restriction brake rod position.Limiting stopper is for limiting the end position of lever connection.
Further, the pull bar 1 inside frame 2 is fixed with block 3.Tractive force, for limiting the end position of pull bar in car haul process, is applied directly in frame by pull bar by block, and all the other rod members do not stress.
Working process is as follows
As shown in Figure 1, when eccentric wheel 12 is in shown position, right side brake equipment is opened, left hand brake device is closed, braking car advances to the right, and prosthomere mine car is drawn in diagram by pull bar 1 and brakes car advance, and pull bar moves until block 3 contacts with frame 1 along the mounting hole in frame, now stage clip I6 is in compressive state, and pull bar drives brake rod to be in and limiting stopper 22 contact position by connecting rod; When there is the traction winch wire rope breaking of traction mine car group, pull bar 1 loses tractive force, and under the elastic restoring force effect of stage clip I6, pull bar 1 is to car rear to movement; Pull bar 1 move drivening rod 5 backward around bearing pin I4 counterclockwise movement, connecting rod 5 drives one end of brake rod 14 to rotate clockwise around axletree 15 by bearing pin II13, brake axle 20 and the brake sleeve 21 of brake rod 14 other end are stuck in the teeth groove of braking orbit 27, owing to axletree being fixed the spacing of back-up ring 28 and detachable back-up ring 29, do not de-orbit when brake rod 14 moves along slotted hole line of centers, makes brake sleeve 21 hang on braking orbit 27; Meanwhile, the stage clip II17 inside rectangle adapter sleeve 14-1 promotes slide plate 16 thus by braking force buffer action on axletree 15, realization brakes the mild braking of car on the tooth-like track in centre, is connected in braking car mine car group below and also brakes in orbit.
When mine car working direction is contrary with direction shown in Fig. 1, starts direction reverser, locating dowel pin 9 is extracted from the knock hole 26 frame 2, driving lever 10 is rotated 180 °, and locating dowel pin 9 to be inserted in frame 2 in another knock hole 26; Movable eccentric wheel 12 is with to compress right pull bar 1 until right-hand member block 3 contacts with frame 2 in the process that driving lever 10 rotates, pull bar 1 drives brake rod 14 to be in and limiting stopper 22 contact position by connecting rod 5, and simultaneously brake rod contacts with the limiting stopper 22 below frame and limits brake rod and continue up; Now the brake equipment in left side is real loses constraint, plays brake action.
Claims (8)
1. a bidirectional hook formula braking car, comprise two groups of coupling type brake equipments and braking orbit (27), described coupling type brake equipment is arranged on the upper rear and front end of braking car frame (2) respectively symmetrically, it is characterized in that, described braking orbit (27) is for being laid on the rack-and-pinion braking orbit in the middle of slope track, coupling type brake equipment comprises the pull bar (1) be connected with prosthomere mine car or deutomerite mine car, pull bar (1) also can slide through the mounting hole in frame (2) in frame (2), the other end of pull bar (1) is through the orienting sleeve be fixed in frame (7), orienting sleeve (7) inner side connects a stage clip I (6), stage clip I (6) cover is connected on pull bar (1), pull bar (1) end connects a guide plate (8) by nut, the other end of stage clip I (6) contacts with guide plate (8) and drives guide plate (8) to slide in orienting sleeve (7),
Often organize coupling type brake equipment and also comprise a connecting rod (5) and a brake rod (14), pull bar (1) is hinged by bearing pin I (4) with one end of connecting rod (5), and it is hinged that the other end of connecting rod (5) and the medium position of brake rod (14) pass through bearing pin II (13);
Brake rod (14) comprises two symmetrical slippers, one end of two slippers is linked together by brake axle (20), the upper cover of brake axle (20) has the brake sleeve (21) that can rotate around it, brake sleeve (21) engages each other with the teeth groove on braking orbit (27), the other end of brake rod (14) has rectangle adapter sleeve (14-1), rectangle adapter sleeve has slotted hole, and axletree (15) is hinged with it through the slotted hole on rectangle adapter sleeve (14-1).
2. bidirectional hook formula braking car as claimed in claim 1, it is characterized in that, blind hole in rectangle adapter sleeve (14-1) is circular, stage clip II (17) is fixed in rectangle adapter sleeve (14-1) by plug screw (19) and back-up ring (18) by one end of blind hole, the other end of stage clip II (17) connects a slide plate (16), and described slide plate (16) contacts with axletree (15) all the time.
3. bidirectional hook formula brakes car as claimed in claim 2, it is characterized in that, the both sides of axletree (15) are moved with fixing back-up ring (28) and detachable back-up ring (29) restriction rectangle adapter sleeve (14-1).
4. bidirectional hook formula braking car as claimed in claim 3, it is characterized in that, the frame (2) of mine car is also provided with direction reverser, described direction reverser comprises eccentric wheel (12), eccentric shaft (11) and driving lever (10), eccentric shaft (11) is connected by key through the Kong Bingyu eccentric wheel (12) in frame (2), eccentric shaft (11) is connected by key with driving lever (10), driving lever (10) band movable eccentric wheel (12) and eccentric shaft (11) rotate around the upper hole of vehicle frame (2) and contact with pull bar (1) end of both sides.
5. bidirectional hook formula braking car as claimed in claim 4, it is characterized in that, one end of driving lever (10) has fixed orifice, frame (2) has two symmetrical knock holees (26), locating dowel pin (9) is fixed on the knock hole (26) of frame (2) through the fixed orifice on driving lever (10); Locating dowel pin (9) connects with driving lever (10) is dynamic, the bearing pin of locating dowel pin (10) has two circular grooves, the side of driving lever (10) has tapped bore, one end of screw (25) connects a steel ball (23) by spring (24), screw (25) is arranged in tapped bore, and steel ball (23) and one of them circular groove engage each other; Driving lever (10) is with when wherein side knock hole is connected, and eccentric wheel (12) extrudes the pull bar (1) of opposite side and opens this side brake equipment.
6. bidirectional hook formula braking car as claimed in claim 5, is characterized in that, uniform some annular knurls on the outer circumference surface of brake sleeve (21).
7. bidirectional hook formula braking car as claimed in claim 6, it is characterized in that, the below of frame (2), the top of brake rod (14) have the limiting stopper (22) of restriction brake rod position.
8. the bidirectional hook formula braking car as described in claim as arbitrary in claim 1 to 7, is characterized in that, the pull bar (1) of frame (2) inner side is fixed with block (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520647794.0U CN204871055U (en) | 2015-08-25 | 2015-08-25 | Two -way couple formula braking car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520647794.0U CN204871055U (en) | 2015-08-25 | 2015-08-25 | Two -way couple formula braking car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204871055U true CN204871055U (en) | 2015-12-16 |
Family
ID=54815465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520647794.0U Withdrawn - After Issue CN204871055U (en) | 2015-08-25 | 2015-08-25 | Two -way couple formula braking car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204871055U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105172829A (en) * | 2015-08-25 | 2015-12-23 | 徐州工程学院 | Bidirectional hook type braking car |
-
2015
- 2015-08-25 CN CN201520647794.0U patent/CN204871055U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105172829A (en) * | 2015-08-25 | 2015-12-23 | 徐州工程学院 | Bidirectional hook type braking car |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151216 Effective date of abandoning: 20170627 |